12780729

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{313}}^1\times {\mathrm{349}}^1$

素因数の和:681

約数の個数: 24

約数和(自身を含む): 20001800

約数和(自身を除く): 7221071

約数列:

[1, 3, 9, 13, 39, 117, 313, 349, 939, 1047, 2817, 3141, 4069, 4537, 12207, 13611, 36621, 40833, 109237, 327711, 983133, 1420081, 4260243, 12780729]

約数ペア:

[(1, 12780729), (3, 4260243), (9, 1420081), (13, 983133), (39, 327711), (117, 109237), (313, 40833), (349, 36621), (939, 13611), (1047, 12207), (2817, 4537), (3141, 4069)]